package com.example.function_interface.predicate;

import com.example.function_interface.User;
import org.junit.Test;

import java.util.ArrayList;
import java.util.List;
import java.util.function.DoublePredicate;

/**
 * 代表一个拥有double值参数的boolean值方法
 */
public class DoublePredicateTest {

    @Test
    public void myTest() throws Exception{
        List<User> userList = new ArrayList<>();
        User user1 = new User(1, "张三", 12, false, 23.3);
        User user2 = new User(2, "李四", 22, false, 200);
        User user3 = new User(3, "王五", 32, true, 123.2);
        User user4 = new User(4, "郑静", 2, true, 0);
        userList.add(user1);
        userList.add(user2);
        userList.add(user3);
        userList.add(user4);

        DoublePredicate doublePredicate = new DoublePredicate() {
            @Override
            public boolean test(double value) {
                return value > 100;
            }
        };
        DoublePredicate doublePredicate1 = doublePredicate.and((value) -> value < 150);
        DoublePredicate doublePredicate2 = doublePredicate.or((value) -> value < 50);

        System.out.println("大于100并且小于150："+doublePredicate1.test(user3.getMoney()));
        System.out.println("大于100或者小于50："+doublePredicate2.test(user3.getMoney()));

        System.out.println("小于100或者大于150："+doublePredicate1.negate().test(user3.getMoney()));
        System.out.println("小于100并且大于50："+doublePredicate2.negate().test(user3.getMoney()));
    }
}
